At the time, many local environment groups and fishers believed that dredging had released a toxic chemical known as pyridine, an industrial substance thought to have settled in the water’s ...

3) Pyridine has never been recorded at concentrations likely to cause acute toxicity The non-peer-reviewed study predicted no effect on crabs at pyridine concentrations below 20,000 micrograms/liter.

A nucleic acid is a long molecule made up of smaller molecules called nucleotides. Nucleic acids were discovered in 1868, when twenty-four-year-old Swiss physician Friedrich Miescher isolated a ...

We can investigate the reactivity of different metals by placing samples in acid and comparing the results. Watch this video to see how this experiment can be carried out. The salt of the metal ...

Solvent Chemical Shift of H 2 O (or HOD) Acetone 2.8 Acetonitrile 2.1 Benzene 0.4 Chloroform 1.6 Dimethyl Sulfoxide 3.3 Methanol 4.8 Methylene Chloride 1.5 Pyridine 4.9 Water (D2O) 4.8 Please keep in ...

Most people are familiar with sodium chloride (commonly known as salt) as a kitchen ingredient, but it also has important medical uses. Sodium chloride (NaCl), also known as salt, is an essential ...

Nitric becomes nitrate, hydrochloric acid becomes a chloride and sulphuric acid becomes a sulphate. Katie: Oh go on then. I thought this might be coming, Miss. You guys can play along at home too.

Sodium Chloride is an alkali halide with an fcc crystal structure. The basis is two ions, a sodium cation and a chlorine anion. The crystal lattice parameter is 0.563 nm. The diagram shows both a unit ...

Amino acid molecules are made of four main elements. You may remember them from science class: carbon, hydrogen, oxygen, and nitrogen. These elements form the same amino acid structure.

A little water helps expose the sodium so it can react with the chlorine gas. The reaction releases a lot of heat as the ionic compound sodium chloride is formed. A sodium and chlorine atom are near ...